Angle gauge



Sept. 5, 1933. W, 350mg a g 1,925,477

ANGLE GAUGE Filed. Feb. 16-, 1931 Patented Sept. 5, .1933 I HUNITED STATES PATENT OFFICE 14 Claims.

This invention relates to an angle gauge which has been designed primarily for use in gauging the 1 angle between two plane surfaces, as for example,

between the table and fence of a jointer.

The object of the invention is to provide an angle gauge capable of operation in either direction from a central or perpendicular position which is regarded as the zero point.

The preferred form of the invention is associated with woodworking machinery and particularly with a jointer in which there is provided a back-stop adjustable so as to limit the inward movementof the fence to a perpendicular position. The invention also includes two scales, graduated in opposite directions, and an indicator arm which may be set at zero on either scale when the fence is in perpendicular position, each scale being so designed and calibrated that the free end of the indicator arm will follow the same as the fence is tilted and will indicate thereon the number of degrees of deviation of the fence from a vertical plane.

. vation of the same Figure 3 is. a front end elevation of the same; Figure 41s avertical section taken on the line H of Figure 2. As illustrated in the drawing, the invention includes a table 6 adjacent to which a fence 'I is supported from a bracket 8 mounted in adjustable fixed relation to the table. The fence '1 is adjustably held by means of an a-clamp 9 having a split bearing 10 to receive a hinge rod 11 which is secured to the bracket 8 and having n ther split bearing 12 to receive a hinge rod 13 which is secured to the fence. A machine bolt 14 passes through opposite flanges 15 and 16 of the clamp and may be tightened to secure the clamp to the rods 11 and 13 when the fence has been adjusted to the desired angle. The purpose of the S-clamp is to provide suitable means to permit the fence to be tilted in either direction from a perpendicular position. with such a construction, the operator may select a number of boards to be joined with the-best side 1' up and the edges of the boards may always be beveled as desired without being compelled to feed againstthe grain. If it appears that the board is in a position in which the feed will be against the grain, the operator may reverse the board end for end and tilt the fence in the opposite direction. The feed willthen be with the grain and the desired bevel will be obtained with the finest finish possible. I

In order to gauge correctly the angle of the bevel, the fence is first set in perpendicular position. Such position may bedetermined by means of a back-stop 1? which is mounted for adjustment about a vertical axis in one end of the rod 11 and may be secured in adjusted position by means of a set screw 18. The end of the stop 17 is provided with lock nuts 19 which may be adjusted-so 85 that when the fence rests squarely against the end nut, the face of the fence will be exactly perpendicular. As the fence is tilted in either direction the angle of its deviation from perpendicular position is measured by means of an indicator arm 20 which is clamped to the front end of the rod 13 by means of a clamping screw 21, a slot 22 being provided in the arm 20 to permitthe latter to be adjusted longitudinally as well as angularly with respect to the rod 13. A vertical plate 23 is secured to the bracket 8 and on this plate are secured two scales 24 and 25 which indicate in connection with the indicator arm 20 the number of degrees which the fence '7 has been tilted.

After the fence 7 has been moved to a vertical position against the back-stop;17, if it is to be tilted outwardly at the bottom, the indicator arm 20 is set. at zero on the scale 24. If the fence is to be tilted inwardly at the bottom the indicator arm is set at zero on the scale 25. Each of these scales is shaped to correspond to the path of travel of the free end of the indicator arm as the fence istilted and each scale is calibrated from zero degrees to 45 degrees to indicate accurately the angle through which the fence is tilted. After the indicator has been set, the back stop 1'7 is swung about its vertical axis to a position where it will be out of theway.

As the fence is tilted the end of the indicator arm '20 describes an arc about the lower edge of the fence as a center, but since this edge is always held in contact with the surface of the table 6 it moves outwardly or inwardly as the fence is tilted while the rod 13 describes an arc about the rod 11 as an axis. As a resultant of these different movements, whenthe lower edge of the fence is tilted outwardly, the free end of the indicator arm follows a line which has a general inclination downwardly and to the right as seen in Figure 3 but is slightly concave toward the left until the red 13 passes the common plane of the lower edge 1 adjacent thereto, a clamp having angularly adthe scale. In adjusting the bottom edge of the fence inwardly, after the end of the indicator arm had been set at zero on the scale 25, the end of the arm follows a curve of gradually decreasing radius and the distance between successive graduations of the scale 25 becomes slightly less toward the upper end of the scale. a

From the foregoing description, it will be seen that we have provided an angle gauge which is especially adapted for use in a jointer and which to be understood that the same includes all modifications which may fall within the scope of the appended claims.

What we claim is: Y

1. The combination with a table, of a fence adjacent thereto, means for adjustably securing the fence in an outwardly or inwardly tilted position, two scales arranged side by side and grad-.

uated in opposite directions, an indicator arm angularly and radially adjustable with relation to the fence, and means for securing the indicator arm to the fence at zero position on either scale 'with the fence in perpendicular position.

2. The combination with a table, of a fence justable connections with the table and the fence to support the latter in an outwardly or inwardly tilted position, two scales supported side by side in fixed relation to the table, and an indicator arm angularly and radially adjustable to the zero point on either scale when the fence is in perpendicular position, said scales being respectively shaped and graduated so that said arm will follow the same and indicate the angle through which the table is tilted in either direction from a perpendicular plane.

3. The combination with a table, of a fence adjacent thereto, a pivot above the table and supporting the fence, the lower edge of the fence being movable outwardly or inwardly to tilt the fence in either directionfrom a perpendicular position with reference to the table, a second pivot about which the first pivot is adjustable to maintain the lower edged the fence in contact with the table as the fence is tilted, two scales arranged side by side and graduated in oppositedirections, an indicator arm angularly and radially adjustable with relation to the fence, and means for securing the indicator arm to the fence at zero position on either scale with the fence in perpendicular position.

4. The combination with .a table, of a fence adjacent thereto,'meansfor supporting the fence with its lower edge adjustable outwardly or inwardly along the surface of the table to vary the plane of the fence in either direction. from a perpendicular position with reference to the table, two scales arranged side by side and graduated in opposite directions,.an indicator arm a ularlyand radially adjustable with relation to the fence,

and means for securing the indicator arm to the fence at zero position on either scale with the fence in perpendicular position.

5. The combination with a table, of a fence macaw increases slightly from the top to thebottom of adjacent thereto, a hinge rod above the table and secured in fixed relation to the fence,another hinge rod parallel to the first hinge rod and secured in fixed relation to the table, a clamping member-having spaced bearings receiving the respective-hinge rods and adapted to be clamped thereto, two scales arranged side by side and graduated in opposite directions, an indicator arm angularly and radially adjustable with relationto the fence, and means for securing the indicator arm to the fence at.zero position on either scale with the fence in perpendicular position, the respective scales being graduated to measure the angle through which the fence is tilted in either direction from a perpendicular plane. I

6. The combination with a table, of a fence adjustable in either direction from a perpendicular plane with reference to the table, a stop adjustable about an axis into or out or operative relation to the fence and provided with a head adjustable to stop the fence in a perpendicular position when the stop is in said operative relation, two scales arranged side by side and graduated in opposite directions, an indicator arm angularly and radially adjustable with relation to the fence, and means for securing said arm to the fence in zero position on either scale when the fence is in perpendicular position.

'1. The combination with a table, of a fence' adjacent thereto, a clamp having angularly adjustable connections with the table and the fence to support the latter in outwardly or inwardly tilted position, a stop adjustable about an axis into or out of operative relation to the fence and provided with a head adjustable ta stop the fence in a perpendicular position when the stop is in said operative relation, two scales supported side by side in fixed relation to the table and graduated in opposite directions, and

an indicator arm angularly and radially adjustable to the zero point on either scale when the fence is in perpendicular position, said scales being so shaped and graduated t the point of the indicator arm will follow the same and denote the angle through which the fence is tilted in either direction from a perpendicular plane.

' 8. The combination with a table, of a fence adjacent thereto, a pivot above the table and supporting the fence, the lower edge of the fence being movable outwardly or inwardly about said pivot to tilt the fence in either direction, a sec- 0nd pivot about which the first pivot is adjustable to maintain the lower edge of the fence in con-v 9. The combination with a table, of a fence ad-'.

'jacent thereto, means for supporting .the fence with its lower edge adjustable laterally along the surface of the table to vary the inclination of the fence in either direction from a perpendicular position with reference to the table, a stop adjustable into or out of operative relation to the fence and provided with a head arranged to stop the fence in a perpendicular position when the stop is in said operative relation, two scales arranged side by side and graduated in opposite directions,

an indicator arm adjustable to the zero point on either scale when the fence is in perpendicular position, and means for securing said indicator.

hinge rod parallel to the first hinge rod and secured in fixed relation to the table, a clamping member having spaced bearings receiving the respective hinge rods and adapted to be clamped thereto, a stop adjustable into or out of operative relation to the fence and having a head arranged to stop the fence in a perpendicular position when the stop is in said operativerelation, two scales arranged side by side and graduated in Op osite directions, and an indicator arm adapted to be adjusted and secured to the fence at zero position on either scale with the fence in perpendicular position, the respective scales being graduated to measure the angle through which thefence is tilted in either direction from a perpendicular plane.

11. The combination witha table, of a fence adjacent thereto means for supporting the fence so that its lower edge is adjustable laterally along the surface '01 the table to vary the angle of the fence in either direction from a plane perpendicular to the table, a stop adjustable into or out of operative relation to the fence and provided with a head arranged to stop the fence in a perpendicular position when the stop is in said operative relation, two scales arranged side by side stopping position.

and graduated in opposite directions, an indicator arm angularly and radially adjustable with -relation to the fence, and means for securing said arm to the fence in zero position on either scale when the fence is in perpendicular position with reference to the table, the shape of said scales and the graduations thereon corresponding to the sition when desired, said stop being hinged sothat it may swing out of contact wtih said fence.

13. In a woodworking machine, the combination with a fence, of means for mounting said fence for adjustment from a vertical position to an inwardly or an outwardly tilted position, and a stop mounted to swing at the option of the operator into or out of a position to stop the fence as the latter is moved to the vertical position.

14. Ina woodworking machine, the combination with a fence hinged to be swung in either direction from a vertical position, and a stop member arranged to stop said fence in the vertical position when desired, said stop member being hinged so that it may be swung out of fence WILLIAM B. BOICE. JOHN E. BOICE.

DISCLAIMER" I y 1,925,477.W'illicm B. Boise and John E. Bo'iee,- Toledo, Ohio. ANGLn GAUGE. Patent dated Se tember 5,1933 Disclaimer filed September 30, 1935, by the assignee, De ta Manufacturing Company. v Hereby. enters this disclaimer to' claims 13 and 14 of said specification which are in the following words, to wit:

'13. In a woodworking machine, the combination with a fence, of means for mountinlg1 said fence for adjustment from a vertical position to an mwardly'or an outwardly t ted position, and a stop mounted to swing at the 0 tion of the operator into or out of a position to stop the fence as the latter is move to the vertical position. 14. In a woodworking machine, the combination with a fence hinged to beswung in either direction from a vertical position, and a stop member arranged to stop said fence in the vertical so that it may be swung out o [Qfliee'al Gazette October 2.9, 1935.1

Position when desired, said stop member being hinged fence-stopping position. 

